Display faces message at bean level

 getmsg(" we can type our own message", it29.getClientId());

    public void getmsg(String msg, String clien_id) {
        FacesContext context = FacesContext.getCurrentInstance();
        FacesMessage fm = new FacesMessage(msg);
        fm.setSeverity(FacesMessage.SEVERITY_ERROR);
        context.addMessage(clien_id, fm);
    }